A., Lejins; B., Lejina
July 2008
Latvian Journal of Agronomy / Agronomija Vestis;2008, Issue 11, p235
Academic Journal
Buckwheat and potato research has been carried out within the long-term crop rotation stationary that was established in 1969 as a part of the Research Institute of Agriculture. The buckwheat proportion within the particular crop rotations went up to 22%, the proportion of potatoes - up to 16%. The highest buckwheat yields were obtained from the buckwheat variants that were cultivated after the winter rye, and within the buckwheat monoculture experimental plots. A considerable yield decrease was observed when cultivating the buckwheat after the potatoes. Weeds in the buckwheat sowings were effectively brought under control by the herbicide Butisane 400 (1,5 l ha-1), applied immediately after sowing. The highest potato yields were obtained when cultivated after winter rye, as compared to potato monoculture growing. A considerable yield decrease was observed within the crop rotations that contained the buckwheat. Herbicide Titus (50g ha-1) treatment on the potatoes provided an increase of yield up to 17% and, a fourfold dose of fungicides increased the yield up to 37%. In the potato monoculture experimental plots we observed up to 4 times more perennial weeds, moreover - the use of pesticides did not provide the increase of the yield which could be obtained while growing the potatoes in a proper crop rotation.


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